VariableObjective.java

/**
 * BetonQuest - advanced quests for Bukkit
 * Copyright (C) 2016  Jakub "Co0sh" Sapalski
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package pl.betoncraft.betonquest.objectives;

import java.util.HashMap;
import java.util.Map.Entry;

import org.bukkit.Bukkit;
import org.bukkit.event.EventHandler;
import org.bukkit.event.HandlerList;
import org.bukkit.event.Listener;
import org.bukkit.event.player.AsyncPlayerChatEvent;

import pl.betoncraft.betonquest.BetonQuest;
import pl.betoncraft.betonquest.Instruction;
import pl.betoncraft.betonquest.InstructionParseException;
import pl.betoncraft.betonquest.api.Objective;
import pl.betoncraft.betonquest.utils.PlayerConverter;

/**
 * Creates variables based on what player is typing.
 * Will not run any events, will not check any conditions.
 * The only way to remove it is using "objective cancel" event.
 * 
 * @author Jakub Sapalski
 */
public class VariableObjective extends Objective implements Listener {
	
	private final boolean noChat;

	public VariableObjective(Instruction instruction) throws InstructionParseException {
		super(instruction);
		template = VariableData.class;
		noChat = instruction.hasArgument("no-chat");
	}

	@Override
	public void start() {
		if (!noChat) {
			Bukkit.getPluginManager().registerEvents(this, BetonQuest.getInstance());
		}
	}

	@Override
	public void stop() {
		if (!noChat) {
			HandlerList.unregisterAll(this);
		}
	}
	
	@EventHandler
	public void onChat(AsyncPlayerChatEvent event) {
		if (event.isCancelled()) {
			return;
		}
		String playerID = PlayerConverter.getID(event.getPlayer());
		if (!containsPlayer(playerID)) {
			return;
		}
		if (event.getMessage().matches("[a-zA-Z]*: .*")) {
			event.setCancelled(true);
			String message = event.getMessage();
			int index = message.indexOf(':');
			String key = message.substring(0, index).trim();
			String value = message.substring(index + 1).trim();
			((VariableData) dataMap.get(playerID)).add(key, value);
			event.getPlayer().sendMessage("§2§l\u2713");
		}
	}

	/**
	 * Stores specified string in this objective.
	 * 
	 * @param playerID
	 *            ID of the player
	 * @param key
	 *            key of the variable
	 * @param value
	 *            string to store
	 * @return true if it was stored, false if the player doesn't have this
	 *         objective
	 */
	public boolean store(String playerID, String key, String value) {
		VariableData data = (VariableData) dataMap.get(playerID);
		if (data == null) {
			return false;
		}
		data.add(key, value);
		return true;
	}

	@Override
	public String getDefaultDataInstruction() {
		return "";
	}
	
	@Override
	public String getProperty(String name, String playerID) {
		String value = ((VariableData) dataMap.get(playerID)).get(name);
		return value == null ? "" : value;
	}
	
	public static class VariableData extends ObjectiveData {
		
		private HashMap<String, String> variables = new HashMap<>();
		
		public VariableData(String instruction, String playerID, String objID) {
			super(instruction, playerID, objID);
			String[] rawVariables = instruction.split("\n");
			for (String rawVariable : rawVariables) {
				if (rawVariable.contains(":")) {
					String[] parts = rawVariable.split(":");
					variables.put(parts[0], parts[1]);
				}
			}
		}
		
		public String get(String key) {
			return variables.get(key.toLowerCase());
		}
		
		public void add(String key, String value) {
			variables.put(key, value);
			update();
		}
		
		@Override
		public String toString() {
			StringBuilder builder = new StringBuilder();
			for (Entry<String, String> entry : variables.entrySet()) {
				builder.append(entry.getKey() + ':' + entry.getValue() + '\n');
			}
			return builder.toString().trim();
		}
		
	}

}